1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0200469ba2f97465770d8d1b8dddddfaa0be302a1d71b6932ab3153441ff6170. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51169113-054c-45bc-ba2a-254dcf3abe8e.json and https://artists.proofprofile.net/proofs/artist/51169113-054c-45bc-ba2a-254dcf3abe8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d32060c93c6b0435e3b3eb6590e09ce29fb6a2a7a465ea367cb765d95189b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09d43f2cb2f4c3cce3f9053dbe35e32fa710d1c2f08498d52388cfd715534a0. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6461358b529a5232dc098937e5614af03a0a4ccb5e8bb173332ad24b8999dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632a3b2114c2e257f39a83be4ced6009f0829d486baaa924c9163fb304e4a9a8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300050.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ad1f3f0533d6492e7d98e31bdf86ac7d83131a7bedcd1f3c2b7f51290e34f2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416cdda2640256496eb321089821545bb285af7e4287555b6b4c51a304685221. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4148b15a449b7a156a709919b8c581c407508f320f3f857613c6761cff4c81. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179d8e65240ca48307a31e67558a0340d0337392c4289c18cb63ac2847df341. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf66c01ac7805d98a63928a1f76ce61712ff802dbcd3fb2e7beef3a15a4324d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdec24f80e6078a20104cf3188c86fd5961afb2e2307f3a43b4d4f61cc6a2e25. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff984af5d33b093a5b7f0a2ed88f180816cbce6df348e651fd4db06535191ad. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9d91d7a868acd17fb967d75172e185ab7a75ddf1bcc7b6303d961ee06a0bf4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cebaa081514043b1037252ba6a1722fdb93e2359588b7d2289b0979d68e0b54. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaf618388e3eaa940573afbf35ce8cc27292595ecd82cbd8c1d110d7a29ee3b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8333559de50b8bb5cbed3cb8bfdf4574d7c10d75a2fa74bd10ad65bb51b5a36. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e22dfcff4271ba18ab95e67d19ccac4901889441111cedad4b3be03a15ed6c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27d6cee2c77178eb0d07170be80c3c5fa892318672b00989cf2222acabc7cbe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c5c576282fddfc4ba50fc7ed13e1253594713f43c6747c4545ad63350ceee3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde015ded44b4214f4c19658fea7c739b0d21b9686e81ce8efae0de09b4b8601. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85533dc16c3c3a3d3bba55b15e7fed70ad609f1965e68a9aa414cfa1b0dc400. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437da2e1c8b5394c426abfb79fbe0cc7ed2e785c98828bef386dc14f98931742. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c742cab37fbb589cdb05d17376742349a4bd34f35c190493059427d5be85220. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfebff1ed8db7833572182d3409495d4655dffb2f90e92eafd37b9196266d9f. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEGS0900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13ab57c7cb9cb89694c8834823e608b0d3b0b5873805885e1942b03bc6f0a4a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX5MY2322849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad77acf8ce750ca781eaf38d2f01fad05c6a2e33deb497ad53ceb8ac699ef711. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX5MY2381117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce0546c42e6303a4237fbf67eef7c7ba6c9c7a09255a1f188bc53c4c18a1f3c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX5MY2324181.